Interesting comments on the ED8s. I think it would help if you mentioned what music you were listening to when you tried any pair of headphones, as we often forget that makes a huge difference in how we perceive things.

I owned a pair of ED8s briefly and thought they were terrible. Mind you, I listen to a lot of jazz. If their drivers are as inconsistent as some measurements suggest, it could very well be luck of the draw whether we get a good pair of any of these headphones or not.

I owned a pair of ED8s briefly and thought they were terrible. Mind you, I listen to a lot of jazz. If their drivers are as inconsistent as some measurements suggest, it could very well be luck of the draw whether we get a good pair of any of these headphones or not.

So much for the famous German engineering and precision . My second pair of Beyer DT250's also sound different to the first.

It's seems to be a regular occurrence with headphone manufacturing in general. What's needed is random checks on headphone QC by some external body and manufacturers being held to account, or at the very least notified of the test results.

I really do think Ultrasone's QC is very inconsistent when it comes to drivers. I've heard a few pairs of Edition 9s and found quite a bit of variance from one to another. I've also heard several Edition 8s---and owned two different pairs---and found variance with them as well. Upstream gear, music preferences, and individual tolerances obviously contribute a great deal to discrepancies in reports, but I also get the sense from reading others' impressions of the PRO 2900 and Edition 10 that driver inconsistencies may very well be an issue there as well.

The Edition 8 is simply a brighter headphone to my ears compared to the Signature Pro no matter what setup I'm using. My original ruthenium version however seemed slightly less problematic in this regard than the limited version, and the latter version seems to have more pronounced glare.

I really do think Ultrasone's QC is very inconsistent when it comes to drivers. I've heard a few pairs of Edition 9s and found quite a bit of variance from one to another. I've also heard several Edition 8s---and owned two different pairs---and found variance with them as well. Upstream gear, music preferences, and individual tolerances obviously contribute a great deal to discrepancies in reports, but I also get the sense from reading others' impressions of the PRO 2900 and Edition 10 that driver inconsistencies may very well be an issue there as well.

The Edition 8 is simply a brighter headphone to my ears compared to the Signature Pro no matter what setup I'm using. My original ruthenium version however seemed slightly less problematic in this regard than the limited version, and the latter version seems to have more pronounced glare.

I really like both of these and would be going out on a limb to purchase regarding cost. I am baffled how a company could charge so much for an inconsistent product, even relative to the quality. I really just want audiophile portable cans and am going to start with the Amperior which is being delivered today. If that doesn't work, I may try the Signature Pro.

I really like both of these and would be going out on a limb to purchase regarding cost. I am baffled how a company could charge so much for an inconsistent product, even relative to the quality. I really just want audiophile portable cans and am going to start with the Amperior which is being delivered today. If that doesn't work, I may try the Signature Pro.

Yeah, it's ridiculous. It's not just Ultrasone either, but other companies like Beyerdynamic and Audez'e too that are notorious for product variation. One shouldn't have to play Russian roulette when buying audio gear.

I own both. While the 750's radical driver placement and larger cups gave more of a pinpoint effect to their imaging, they mostly sound f'd up compared to the Signatures. I could put the 750's on tomorrow morning if you want something in depth, but from what I remember of their performance, even compared to something like the SRH840's, they're in very different leagues.

I don't remember the 750's having the sibilance the 8's or, to a lesser extent, the Signatures can have sometimes, but their incredibly funky midrange made them polarizing for me in a manner that the higher end Ultrasones aren't.

I own both. While the 750's radical driver placement and larger cups gave more of a pinpoint effect to their imaging, they mostly sound f'd up compared to the Signatures. I could put the 750's on tomorrow morning if you want something in depth, but from what I remember of their performance, even compared to something like the SRH840's, they're in very different leagues.

I don't remember the 750's having the sibilance the 8's or, to a lesser extent, the Signatures can have sometimes, but their incredibly funky midrange made them polarizing for me in a manner that the higher end Ultrasones aren't.

This topic come up several times (recently actually).. it might be a good idea to like through the past 20 pages of this thread - there should be some useful info/responses to your question. Just a warning the responses are varied so don't know how much it will help with your decision. My personal preference is towards the Signature Pro.

If you consider neutrality preferential, then I'd say the Signature Pro is an upgrade. In terms of "performance" that's really the only area where it bests the Edition 8 handily in my opinion. The Edition 8 on the other hand is more of a stereotypical "hi-fi" sound with sparkly treble and more of a "wow factor" to it. However some, like myself, find that gets old pretty quickly. So it depends on what you're looking for, as is most often the case.